This is jamming and not GPS spoofing. Wouldn't the navigation system 'fail' and that pilot switch over to flying by heading? I would think the civilian craft wo

This is jamming and not GPS spoofing. Wouldn't the navigation system 'fail' and that pilot switch over to flying by heading? I would think the civilian craft would have to be robust in the presence of spoofing (military testing). ATC would declare a certain area as GPS off, a NOTAM or something.